B - Operations – Transporting – 42 – D
Patent
B - Operations, Transporting
42
D
281/12
B42D 13/00 (2006.01)
Patent
CA 1227819
A Cassette and an Appurtenant Apparatus having a Screen for Cyclical Displaying of a Plurality of Pictures. Abstract: The cassette to be used in an apparatus having a screen for showing a plurality of different pictures sequentially comprises two sets of sheets, each being di- vided in strips (1a, 1b, 1c resp. 2a, 2b, 2c). The strips are made by cutting lines which at their ends are joining openings. The openings in the sheets of the foremost set extend upwards from the cutting line, and the openings in the sheets of the rearmost set extend downwards from the cutting line. Thus the sheets and hence the strips are mutually displaceable in a vertical direction, and the picture segments on the strips (2b) in a sheet belonging to the rearmost set can be displaced upwardly beyond the upper edges of the strips (1a) in a blank front sheet (1). Corresponding picture segments on the strips in a sheet be- longing to the foremost sheet can be displaced further up- wards to cover the remaining segment of the strips in the front sheet (la), whereby a complete picture becomes vi- sible. The vertical movements of the sheets can be control- ed by motor-driven guide means acting on the marginal port- ions of the sheets. For each picture to be shown, the cassette has to contain only two sheets carrying identical pictures, i.e. a picture sheet in the foremost set and a picture sheet in the rearmost set. (Figure 5).
431898
Gowling Lafleur Henderson Llp
Holk Jon
LandOfFree
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